Abaseball strikes carol in the head and she is momentarily knocked unconscious. the physical injury, though not serious, is most likely to interfere with carol's memory.

I believe the answer is short-term memory. I say this because the minor detail included states that the injury is not that serious.

Alcohol and drug abuse, concussions and other trauma to the head can impact short-term memory.

Hope this helps!

Mri or anything that has uv lights